- Contact information
- DNR invasive species staff
Report invasive species
We are working to keep invasive species out of Wisconsin. Early reports of new populations allow us to respond rapidly and control invasives before they spread into new areas. Select from the tabs below to report invasive species you have found.
I found a new aquatic invasive species not known to occur in my lake, wetland or stream. How do I report it to the Wisconsin DNR?
If it is a plant:
- Be sure the suspected invasive species has not been previously found on the waterbody.
- Take a digital photo of the plant in the setting where it was found (if possible). Then collect 5 – 10 intact specimens. Try to get the root system, all leaves as well as seed heads and flowers when present. Place in a ziplock bag with no water. Place on ice and transport to refrigerator.
- Fill out form 3200-125 - Aquatic Invasive Plant Incident Report
- Contact your local DNR Aquatic Invasive Species Contact listed below and deliver the specimens, report and digital photo (if available). Please do this as soon as possible – no later than 4 days after you discover the plant.
- Milwaukee Area (Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Walworth, Washington, Waukesha)
Heidi Bunk, 262-574-2130, firstname.lastname@example.org
- Green Bay Area (Marinette, Menominee, Oconto, Shawano)
Brenda Nordin, 920-662-5141, email@example.com
- Green Bay Area (Brown, Calumet, Door, Fond Du Lac, Kewaunee, Manitowoc, Outagamie)
Mary Gansberg, 920-662-5489 firstname.lastname@example.org
- Oshkosh Area (Green Lake, Marquette, Waupaca, Waushara, Winnebago)
Ted Johnson, 920-424-2104 email@example.com
- Madison Area (Columbia, Dane, Dodge, Grant, Green, Iowa, Jefferson, Lafayette, Richland, Rock, Sauk)
Susan Graham, 608-275-3329, firstname.lastname@example.org
- Woodruff Area (Iron, Vilas, Oneida)
Kevin Gauthier, 715-356-5211, email@example.com
- Rhinelander Area (Florence, Forest, Langlade, Lincoln, Price, Taylor)
Jim Kreitlow, 715-365-8947, firstname.lastname@example.org
- Spooner Area (Ashland, Bayfield, Burnett, Douglas, Washburn)
Pamela Toshner, 715-635-4073, email@example.com
- Spooner Area (Barron, Polk, Rusk, Sawyer)
Alex Smith, 715-635-4142, firstname.lastname@example.org
- Eau Claire Area (Adams, Buffalo, Chippewa, Clark, Crawford, Dunn, Eau Claire, La Crosse, Marathon, Monroe, Pepin, Pierce, Portage, St. Croix, Trempealeau, Vernon, Wood)
Jodi Lepsch, 715-838-8385, email@example.com
If it is a fish, contact your local fish biologist.
If you think you have caught a diseased fish, follow these steps.
If it is an animal other than a fish:
- Be sure the suspected invasive species has not been previously found on the waterbody
- Take a digital photo of the animal in the setting where it was found (if possible). Then collect up to five specimens. Place in a jar with water; put on ice and transport to refrigerator. Transfer specimen to a jar filled with rubbing alcohol (except for Jellyfish – leave in water).
- Fill out form 3200-126 – Aquatic Invasive Animal Incident Report
- Contact your local DNR Aquatic Invasive Species Contact listed above and deliver the specimens, report and digital photo (if available). Please do this as soon as possible; no later than 4 days after you discover the animal.
Thank you for taking the time to collect, report and deliver your specimens. If you would like to learn more about aquatic invasive species, please visit the following website.
Please report invasive plants in wetlands and riparian areas!
If you observe an invasive plant you can email its location and photos to us at firstname.lastname@example.org. Check the photos and descriptions of plants on the wetlands webpage if you need help identifying the plant you have observed.
- Please complete the Invasive Plant Report Form to report occurrences of invasive plants growing in wetlands or on streambanks in Wisconsin. If possible, please note the population size/density, habitat type and landowner name.
- You must document the plant species. If possible, email with your form one or more photographs of the plant showing its identifying characteristics and some common object for scale. (You may also send in plant specimens to document the species - see below.)
- Please provide the most accurate location data you can. Using GPS is best; note the datum being used (e.g. WGS 84, UTM, etc.). You may also note a location on a paper map; then go to the DNR’s Surface Water Data Viewer to easily find the desired location coordinates to report.
- Send form and your identification evidence, either photos or plant specimens, (see below for instructions) to the DNR. Use the address provided on the form or send via email. Please indicate on subject line that the report is for a species found in a wetland or on a streambank.
Surveying particular wetlands for invasive plants
- If you have checked a particular wetland or length of roadside ditch or streambank for specific invasive wetland plants you can report by using the Wetland Invasive Plant Monitoring form . This form tells us where you looked and where you found invasives, giving us a better understanding of wetland health.
Gathering specimens for identification evidence
- Fresh specimens: Diagnostic samples of the plant, especially flowers, fruits, stem section with leaves or whole plants can be sent by US mail. Package with a moist paper towel in a sealed plastic bag. Keep cool until mailing and send as soon as possible.
- Pressed and dried specimens: To learn how to make pressed specimens, visit the UW-Green Bay Cofrin Center for Biodiversity . Enclose each specimen in a newspaper sleeve between two stiff cardboard sheets and send by US mail.
A note about reed canary grass (Phalaris arundinacea): Please report reed canary grass only when it is a new, small infestation located in a high quality wetland, such as a State Natural Area.
Mailed specimens and reporting forms should be sent to:
Invasive Plants Project - ER/6
P.O. Box 7921
Madison, WI 53707-7921
Check photos and descriptions on the website to help narrow the possibilities for plant identity. Be sure to include notes about site location and description, population size and control actions taken, if any.
- Complete the Invasive
Plant Report Form
to report occurrences of invasive plants growing in Wisconsin or near
state borders. Please use one form for each sample.
- If you prefer to use GPS (global positioning system) but do not have a GPS device, you can visit itouchmap.com to find the precise location on a digital topographic map.
- If using a GPS device, please note the datum being used (e.g. WGS 84, UTM, WI Transverse Mercator, etc).
- Enclose form with your identification evidence: photographs, pressed plant specimens, or fresh specimens. See below for guidelines on each method.
- Send to the Wisconsin DNR. Use address on form or submit by email.
Guidelines for identification evidence
- Photographs. Use either film or a digital camera, and try to capture the maximum number of details. Focus on flowers, leaf shape, leaf & stem arrangement, and fruits. For a size scale, be sure to include a pencil, dollar bill, coin, or other object of a standard size. For giant hogweed, have a person stand near – but not touching! – the plant. Send by email or US mail (address below).
- Fresh specimens. Diagnostic samples of the plant especially flowers, fruits, stem section with leaves or whole plants can be sent by US mail. Package with a moist paper towel in a sealed plastic bag. Keep cool until mailing and send as soon as possible.
- Pressed and dried specimens. To make pressed specimens, visit the UW-Green Bay Cofrin Center for Biodiversity. If you have a plant press or can make one, press plants providing as many plant structures as possible. Enclose the specimens – each in a newspaper sleeve – between two stiff cardboard sheets and send by US mail.
The Wisconsin Invasive Plants Reporting & Prevention Project is an Early Detection and Strategic Response initiative co-sponsored by the DNR and the Wisconsin State Herbarium, along with the cooperation of many organizations and individuals.
Send reporting form via email by using the "Submit by Email" button on the form.
Send specimen and reporting form to:
Invasive Plants Project - ER/6
P.O. Box 7921
Madison, WI 53707-7921
Plant pests & diseases
Visit the Forest Health site if you have trees that appear sick.
To report emerald ash borer or gypsy moth, visit the appropriate DATCP site below:
To report a Chapter NR40 regulated species or rule violation, email Dreux Watermolen, Science Information Services Section Chief, or call 608-266-8931.